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Photos:The crowded Web music scene

The crowded Web music scene – Apple on Monday launched iTunes Radio, a free streaming-music service for desktop and mobile devices. As more people grow comfortable with playing songs online instead of downloading them, the streaming-music landscape has grown crowded. Here's a look at some of the players.

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Photos:The crowded Web music scene

Pandora – With more than 150 million listeners, Pandora is the Web's most popular music-streaming service. Launched in 2005, it acts like a personalized Internet radio station, serving up a steady mix of free tunes based on users' recommendations. Paying users get an ad-free version.

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Photos:The crowded Web music scene

Spotify – Launched in Sweden, Spotify came to the U.S. in 2011 and has built a sizeable audience through its partnership with Facebook. Spotify caters to the instant-gratification crowd by letting users stream anything for free from its library of 18 million songs.

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Photos:The crowded Web music scene

Xbox Music – Microsoft launched Xbox Music in the fall of 2012. Like Spotify, it lets users instantly stream music -- to the Xbox home-entertainment system or to Windows-powered PCs, tablets and phones.

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Photos:The crowded Web music scene

Google – Among teens, YouTube already is the most popular way to listen to music, according to a Nielsen survey. A Google music service would reportedly let YouTube users subscribe to streaming-music options as well.

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Photos:The crowded Web music scene

Twitter Music – In April, Twitter signaled a music site is coming soon, going live with a webpage (albeit one that didn't yet do anything). Unconfirmed reports suggest a Twitter music service would suggest songs for users based on several criteria, including who they follow on Twitter. Ryan Seacrest has already sung its praises -- on Twitter.

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Photos:The crowded Web music scene

Google Play Music All Access – Google announced its own streaming service, Google Play Music All Access, in May. It combines the millions of songs in the Google library with users' own music collections, which can be uploaded to Google Play. The service works on the Web and on mobile devices.

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Story highlights

Bands make money when someone listens on Spotify

Indie band Vulpeck got fans to listen millions of times

Spotify says the band violated their rules

Silence is golden. Or at least that was the plan.

Indie band Vulfpeck hatched a scheme to earn a big payout from Spotify. But they'd have to be clever; the music streaming service pays artists less than a penny a play.

So, here's what Vulfpeck did. The band uploaded a 10-song album called "Sleepify" and asked their fans to stream the album on repeat while they slept, hoping to multiply the royalty rate exponentially.

There was even some incentive. The band was going to use the money to pay for a free concert tour and go to the cities that streamed the album the most.

Every track is completely silent -- no music at all -- and only about half a minute long. According to the Spotify's payment plan, each song needs to be listened to for at least 30 seconds to count as an official listen.

Cha-ching! Fans came up big.

Vulfpeck racked up about $20,000, according to reports. At the half-a-cent per play rate the band says it gets from the service, that's 4 million plays.

But not so fast, Spotify told the band: The album violated its terms of content.

And "Sleepify" was gone.

When contacted, Spotify's Graham James had little to say.

"Sorry. Not commenting on this one," he told CNN.

There's no word on whether Vulfpeck will get paid.

Such a setback might deter other bands.

But not Vulfpeck. It bounced back with a new three-track album called "Official Statement."

On the first track, "#Hurt," Keyboardist Jack Stratton spills his guts about the situation.

"The gist of it was that, while they enjoyed 'Sleepify' and thought it was funny and clever, that it violated their terms of content," he said.

"So I don't know what's going to happen with it -- it's very uncertain at the moment. And in light of that uncertainly I want to take 30 seconds silence to ponder the uncertainty."

That ushers in the second track, "#Reflect" -- 31 seconds of silence.

Sound familiar?

Track three is a 32-second instrumental called "Parted Sea (Strong Pesach)."

Can lightning strike twice? We'll see.

But for a repeat, Vulfpeck fans will have to hit repeat, again and again and again ....